Restorative for blemished moving-picture films.



FREDERICK W. HOCHSJETTER, OF NEW YORK, N. Y., ASSIGNOR 'IO PAUL M. PIERSON, OF SCARBORO-ON-THEHUDSON, NEW YORK.

RESTORATIVE FOR BLEMISH ED MOVING-PICTURE FILMS.

No Drawing.

To all whom it may concern:

Be it known that I, FREDERICK W. Hoorr srnrrnn, a subject of the Emperor of Ger-- many, and a resident of New York, county and State of New York, have invented a new and useful Restorative for Blemished liIoving-Picture Films, of which the following is a full, clear, and exact specification.

My invention has for its object to provide a composition ofmatt-er designed to beemployed for restoring the pictures upon the types of films ordinarily used in conjunction with moving picture machines when the p10- tures have become blemished by scratches, or the clearness of the photography being be- .dimmed by fine particles of dust which the film invariably collects as it passes through the transmitting mechanism of the machine, thus causing what is commonly known as rain in the pictures when projected upon a screen and which tends to, make the pictures practically worthless after being used a limited number of times.

A preferred form of my composition of matter consists of the following ingredients, combined in the proportions stated, viz petrolatum, 6 ounces; spirits of camphor, (U. S. P. strength) by weight 2 ounces; sulfuric ether, (U. S. P. strength) by weight ounce; glycerin by weight 1 ounce.

The petrolatum is first melted by heat at a low temperature, and while the petrolatum is in a melted state the glycerin is min-.

gled in any suitable manner. When this mixture has become cool the spirits. of camphor and the sulfuric ether, either separately, or after being previously mixed, are then added, and all of the ingredients are thoroughly incorporated together by agitation through the employment of any desired methods so as to produce a smooth and uniform emulsion.

To use the composition for restoring the blemished pictures of a film a required quantity of the emulsion to form a coating Specification of Letters Patent.

Patented May 18, 1915.

Application filed November 20, 1912. Serial No. 732,465.

is applied upon a surface of the film by the use of one, or more buffers made of chamois skin, flannel, or other soft material. By then thoroughly rubbing thecoating on the film the emulsion will penetrate the crevices of the scratches as well as softening the texture of the film for restoring its flexibility. By subsequently rem0ving all excess of the emulsion from the film with the use of a pad, or otherwise, all the scratches will be cleared of particles of the dust, or other foreign substances, and the clearness of the high lights and shadows of the photography of the pictures will also be renewed.

I Vhile in the foregoing description I have set forth the preferred formula of my composition, I do not wish to be understood as limiting myself thereto, as I am aware that the proportions of the ingredients mentioned may be varied as well as dispensing with the use in conjunction with an oil of one or more of other ingredients, without departing from the principle, or sacrificing any of the advantages of this invention, therefore I reserve to myself the right to make such changes as fairlyfall within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent I i 1. Arestorative for blemished moving picture films consisting of petrolatum, spirits 'of camphor, sulfuric ether, and glycerin,

substantially as set forth.

2. A restorative for blemished moving picture films comprising petrolatum six ounces, spirits of camphor two ounces, sulfuric ether one-half ounce, and glycerin one ounce.

This specification signed and witnessed.

FREDERICK W. HOCHSTETTER. 

